||Myself and a friend both have one of these combos, purchased here from Amainhobbies and flown across the pacific to Australia.
We were really excited about these, arriving for our new RC8.2e buggies. To start off, the ESC and motor combo is POWERFUL. Ultra smooth throttle and braking.
The 'turbo' dynamic timing advance feature usually seen in 1/10 touring ESCs is simply MAD on this thing. On 4S the buggy feels like it was on a 6S mamba monster system, its that amazing. That was only on a LOW timing advance setting as well!
However all good things must come to an end... and unfortunately my activ8 ESC did just that on the 3rd battery, after the 2nd week of initial use.
Near the end of the 3rd battery pack that has ever been through the ESC, the buggy suddenly locked up at high speed on tarmac. It was Violent, very sudden. It sounded like the pinion and spur gears were demolished. (they were okay, but the front bumper scratched the ground...)
The car refused to respond to throttle inputs when at a dead stop after that. The ESC died, and it would only power the motor if i gave my buggy a push start, and whenever it stopped, it won't start up again until you gave it another nudge.
Currently in the process of doing a warranty return with Novak, will see how long my friends Activ8 combo will last compared to mine...
It's an amazing system, but the reliability could be better. I also just noticed that the bottom surface of the ESC isn't flat. The casing is pressing against a component on the Circuit Board... O___O so some build quality issues there too...